JP2547583Y2 - Metering operation device for power spreader - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metering operation device for a power sprayer which can effectively perform a small amount adjustment of a drug metering in multiple stages.

[0002]

2. Description of the Related Art Conventionally, a metering lever capable of adjusting the opening of a metering shutter located below a medicine tank is operated by operating a guide plate having a large number of corrugated engagement grooves formed on one side in the entire longitudinal direction. A power spreader configured to be inserted into a groove so as to be able to perform a metering operation is known as disclosed in Japanese Utility Model Laid-Open No. 55-70717, and as disclosed in Japanese Utility Model Laid-Open No. 62-187660. It is also known that a slider having engagement grooves having different pitches on both sides is rotated to perform fine adjustment of the metering by a metering lever.

[0003]

However, in the metering operation device as disclosed in Japanese Utility Model Laid-Open No. 55-70717, the number of steps of metering is small because the number of engagement grooves of the slider is small. Moving the slider one by one makes it difficult to operate and makes it difficult to perform effective micro-adjustment.Moreover, the slider must be moved and rotated in the vertical direction, so the guide plate is large and practical. Has a problem that inconvenience occurs.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised to solve such a problem and to effectively perform multi-stage micro-adjustment. Therefore, a metering shutter located below a medicine tank is provided. In a power spreader configured to be capable of performing a metering operation by inserting a metering lever capable of adjusting the opening degree of a guide plate into an operation groove of a guide plate formed with a number of wavy engagement grooves over the entire length in one longitudinal direction, An adjustment plate having substantially the same length in the vertical direction as the operation groove is fixed to the lower surface of the guide plate so as to be movable in the lateral direction, and a plurality of corrugated second engagement grooves are provided on one side of the adjustment plate. Are formed over the entire length in the vertical direction, and the engagement groove and the second engagement groove are vertically displaced from each other, so that one groove overlaps the other groove, and a short pitch engagement is provided therebetween. It is configured so that a mating groove can be formed.

[0005]

When the adjusting plate is moved so that the second engaging groove of the adjusting plate is disengaged from the engaging groove of the operating groove of the guide plate, the metering lever is engaged with the corrugated engaging groove of the guide plate. As a result, the coarse adjustment operation can be effectively performed in multiple stages as in the past, and the pitch of the second engagement groove of the adjustment plate is shifted from the engagement groove of the operation groove of the guide plate. When the adjusting plate is moved laterally so as to overlap with each other, a multi-step groove having a pitch shorter than the pitch of the engaging groove is formed between the engaging groove and the second engaging groove. In this way, effective micro-adjustment can be performed in multiple stages while the metering lever is engaged with the groove.

[0006]

FIG. 2 is a rear view of a backpack type power spreader, and a discharge section 6 which can discharge and adjust by a metering shutter is provided in a lower part of a medicine tank A for storing a granular material or the like. A blower 9 driven by an engine 8 covered with a cover 7 is provided below and in communication with the discharge section 6 so that a jet hose or the like can be connected to a discharge tube 10 at the tip end of the blower 9. The central portion of the guide plate 3 is fixed to the front end surface of the bracket 11 mounted on the lateral side of the blower 9 by means of both screws 12, and the both sides of the guide plate 3 extend over the entire length of one side in the vertical direction. An operation groove 2 of the metering lever 1 having a number of corrugated engagement grooves 2a and an operation groove 13 of a throttle lever 14 having a corrugated engagement groove 13a on one side are formed in parallel,
The base 1a of the metering lever 1 bent in an L shape is loosely fitted to a boss 15 fixed to the bracket 11, and the turning arm 1 is bent and extended from the base of the throttle lever 14.
6 is loosely fitted to the boss 15, and between the arm 17 fixed to the end of the base 1 a of the metering lever 1 and the rotating arm 16, the two levers 1 and 14 are engaged with the engagement groove. 2a, 1
A compression spring 18 that can resiliently press each other is interposed on the 3a side, and an operation wire 19 extending from the arm 17 is interlocked and connected to a metering shutter in the discharge unit 6. An operation wire 20 extending from the distal end is connected to the engine 8 side in an interlocking manner and is configured substantially in the same manner as the conventional type, but a portion of the metering lever 1 that engages with the engagement groove 2a of the operation groove 2 is provided. The small protruding protrusion 1b is integrally formed.

Reference numeral 5 denotes an adjusting plate having substantially the same thickness as that of the guide plate 3 and formed so as to be joined to the lower surface of the guide plate 3 and to have substantially the same length in the vertical direction as the operation groove 2.
On one side edge of the adjusting plate 5, a large number of corrugated second engaging grooves 4 which are shifted by a half pitch in the vertical direction with respect to the engaging grooves 2a of the operation groove 2 are formed over the entire length in the vertical direction. Operation groove 2
In the portion of the guide plate 3 which is laterally outward, two parallel long holes 21 are formed, and both bolts 22 fixed to the adjustment plate 5 are fitted into the long holes 21 respectively. A washer 23 is fitted to the distal ends of both bolts 22 and screwed with wing nuts 24, respectively, so that the adjustment plate 5 can be freely moved and adjusted in the lateral direction.

Therefore, as shown in FIG.
The two bolts 22 are slid to the outer ends of the long holes 21 and the two wing nuts 24 are tightened so that the second engagement groove 4 is disengaged from the engagement groove 2 a of the operation groove 2 of the guide plate 3. 5
Is moved, coarse adjustment operation can be effectively performed in multiple stages as in the related art while the adjustment lever 1 is engaged with the corrugated engagement groove 2a of the guide plate 3.
Also, as shown in FIG. 5, the two bolts 22 are connected to the inner ends of the long holes 21 so that the second engagement groove 4 of the adjustment plate 5 overlaps the engagement groove 2a of the guide plate 3 at a shifted pitch. When the adjusting plate 5 is moved in the lateral direction by tightening the wing nuts 24, the pitch between the engaging groove 2a and the second engaging groove 4 is shorter than the pitch of the engaging groove 2a. The multi-step groove is formed, and effective micro-adjustment can be performed in a multi-step manner while the protrusion 1b of the adjustment lever 1 is engaged with the groove.

[0009]

As described above, according to the present invention, the second engagement groove (4) of the adjustment plate (5) is adjusted so as to be disengaged from the engagement groove (2a) of the operation groove (2) of the guide plate (3). When the plate (5) is moved, the rough dosing operation can be effectively performed in multiple steps as in the conventional art, while the dosing lever (1) is engaged with the engaging groove (2a). And the second of the adjusting plate (5).
If the adjustment plate (5) is moved laterally so that the engagement groove (4) overlaps the engagement groove (2a) of the operation groove (2) of the guide plate (3) with a shift in pitch, Engagement groove (2
a) and the second engaging groove (4), a multi-step groove having a pitch shorter than the pitch of the engaging groove (2a) is formed, and the metering lever (1) is formed in the groove. ) Can be effectively adjusted in a multi-step manner while engaging, and the switching operation can be easily and accurately performed only by slightly moving the adjustment plate (5) in the lateral direction. ) Has a feature that it can be suitably implemented with a simple structure so as not to increase the size.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of an embodiment of the present invention.

FIG. 2 is a rear view showing the backpack type power spreader.

FIG. 3 is a side view showing a main part.

FIG. 4 is a plan sectional view showing a part of FIG. 3;

FIG. 5 is a front view showing a view along the line VV in FIG. 3;

FIG. 6 is a sectional view showing a part of FIG. 5;

FIG. 7 is an exploded front view showing a part of FIG. 1;

[Explanation of symbols]

 A medicine tank 1 metering lever 2 operation groove 2a engagement groove 3 guide plate 4 second engagement groove 5 adjustment plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A metering lever (1) capable of adjusting the opening of a metering shutter below a medicine tank (A) is provided with a large number of corrugated engaging grooves (2a) over the entire length in one longitudinal direction. In a power spreader configured to be capable of adjusting the amount of operation by being inserted into an operation groove (2) of a guide plate (3) formed with a control plate (3), an adjustment plate (5) having substantially the same vertical length as the operation groove (2). Is fixed to the lower surface of the guide plate (3) so as to be movable and adjustable in the horizontal direction, and a plurality of corrugated second engagement grooves (4) are provided on one side of the adjustment plate (5) over the entire length in the vertical direction. The engagement groove (2a) and the second engagement groove (4) are vertically displaced from each other in the vertical direction, and one groove overlaps with the other groove, and a short pitch is formed between the grooves. A metering operation device, characterized in that it is configured so that an engagement groove can be formed.